Wrench.



N. 746,516. VPA'II-INIED DEGl 8, 1903..-

W. L. JACKSON.

WRENCH.

APPLIGATION FILED MAY 2, 1903.

N0 MODEL.

TH: Ncnms PLrERs co. :mom-umu wmus'rou UNITED STATES Patented December81, 1903.

`WARREN L. JACKSON, OF JAMAICA, NEW YORK.

WRENCH.

SPECIFICATION forming' part ofLetters Patent No. 746,516, dated December8, 1903.

Application filed May 2, 1903. Serial No. 155,363. (No model.)

To all whom it may concern:

Be it known that I, WARREN L. JACKSON, a citizen of the United States,residing at Jamaica, in the county of Queens and State of New York, haveinvented new and useful Improvements in Wrenches, of which the followingis a specification.

My invention relates to wrenches; and the primary object of the same isto provide adevice of this character in which the movable jaw thereofmay have, after the same has been set to the size of a nut,automatically imparted thereto slight movements without interfering withthe primary adjustment thereof to increase and diminish the distancebetween the rigid jaw and itself, whereby the engagement anddisengagement of a nut is greatly facilitated.

Further objects of the invention' will appear as the nature of the sameis more fully nnderstood from the accompanying drawings.

The invention consists in the construction, combination, and arrangementof parts hereinafter fully described and claimed, and illustrated in theaccompanying drawings, showing the preferred form of my invention, andin whichp Figure 1 is a side elevation of a wrench constructed inaccordance with my invention, the sliding jaw thereof being in section.Fig. 2 is a sectional view on the line 2 2, Fig. l. Fig. 3 is a similarview on the line 3 3, Fig. 1.

Fig. 4 is a perspective view of a fragmentary 'f extending throughoutthe entire length therejustment of the jaw 3. The rod is provided withdiametrically opposite screw-threads 8, which extend from a point at ornear the top to a point at or near the bottom thereof. This manner ofthreading the rod provides `the same with two smooth and two threadedfaces. The nut 6 is provided with a bore of a diameter greater than thatof the rod through which the bolt 8 is adapted to freely pass tofacilitate the movement of the jaw 3. The nut at diametrically oppositepoints has the bore thereof provided with screw-threads 9, which in oneposition of the nut are adapted to engage the threads 8 and secure thejaw 3 in its adjusted position, While in another position of the nut thethreads 9 are disposed opposite the smooth faces of the bolt and betweenthe threads 9, whereby the jaw 3 is free ,to be adjusted upon the shank.The

- nut 6 is provided with an upwardly-projecting lip 10, through themedium of which the nut may be turned to either present the threads 9opposite the smooth faces of the bolt 8 or canse said threads to engagethe threads 8.

10 designates the handle, which is provided with a bifurcated end 1'1,having aliningperforations l2, through which passes to engage the shank1 and to fulcrum the handle thereon a bolt 13. The handle 10 throughvirtue of its fulcrum has a limited movement upon the shank, and as thejaw 4 is secured to the handle any movement of the latter will cause theformer to approach or recede from the jaw 2. The portion ll of thehandle has two vertically-disposed [langes 14, formed integral therewithand in which is formed alining and acutely-arranged elongated slots l5.A bolt 16, which is carried by the rod 8, passes through the slots 15 tosecure said rod to the handle. The connection of the rod 8 to the handlethrough virtue of the elongation of the slots -15 and their acutedisposition permits of the handle having a movement upon the shankWithout materially interfering with the horizontal disposition of therod, thereby obviating all liability of the mutilation of the threads 8when the nut 6 is turned to lock the jaw 3 jupon the rod.

The operation of thevwrench may be explained as follows: The nut 6 isturned to place the threads 9 opposite the smooth faces IOO of rod 7,leaving the jaw free to be adjusted to the size of the particular nut,and then locked in such position by causing the threads 9 to engage thethreads 8. The jaw 3 being locked to the rod 7 will follow an7 movementof the handle, the outward movement of which will cause said jaw torecede from the jaw 2, thereby increasing the distance between said jawssufficiently to permit of the easy application of the Wrench to the nut,while the inward movement ofthe handle causes the jaw 3 to approach thejaw 2, thereby consequently clam ping the nut between the two jaws. Theinward movement of the jaw is caused by turning a nut on or Ott a bolt,and the outward movement of the handle is caused when the Wrench isapplied to a nut by a reverse movement of the handle. f Itis apparentfrom the above description, taken in connection with the accompanyingdrawings, that I provide a wrench which will greatly facilitate theengagement and disengagement of a nut by the wrench and that the sauleis cheap, durable, and eiiicient.

Having thus fully described the invention, what is claimed as new is- Awrench comprising a shank provided with a fixed jaw, a movable jawmounted on the shank and provided with a through longitudinal slot, saidjaw also being provided with a groove communicating with said slot andarranged at or near its inner end, a nut mounted in said groove andprovided with oppositely-disposed screw-threads, a handle provided witha bifurcated end adapted to receive the end of the handle and providedwith alining perforations, a bolt adapted to pass through theperforations and engage the shank to fulcrum the handle thereon,vertically-disposed flanges formed integrally with the handle andprovided with acutely-disposed, elongated slots, a bolt provided withoppositely-disposed screw-threads, said bolt having one of its endsfitted into the nut and its opposite end situated between the Iianges,and a bolt arranged in the slots in the flanges and adapted to engagethe threaded bolt.

In testimony whereof I aix my signature in presence of two witnesses.

WARREN L. JACKSON.

Witnesses:

FRED T. MARTIN, FREDERICK H. CARLETON.

